Engine-casing.



F. L. & G. S. JACOBS.

ENGINE CASING.

APPLICATION FILED 00120, 1913.

Patented Oct. 6, 1914.

3 SHELITS-SHEI1T 1.

F. L. & O. S. JACOBS.

ENGINE CASING.

APPLICATION FILED OCT. 20, 1913.

Patented Oct. 6, 1914;. a SHEETS-SHEET 2.

ami humus F. L. & C. S. JACOBS.

ENGINE CASING.

APPLICATION FILED 001'.2o,191s.

Patented Oct. 6, 1914.

3 SHEETS-SHEUT 3.

51" vendors w flcdizicZ lJacok Mwwooeo s Ularcei Q6050 oz. 0 0M construction, combination and arrangement FREDBICK LLJ'AQOBS AND CLARE S. JACOBS, OF DETROIT, MICHIGAN.

ENGINE-CASING.

Specification of Letters Patent.

Patented Oct. 6, 1914.

Application filed October 20, 1918. Serial No. 796,165.

To all whom it may concern Be it known that we, Fnnonrcx L. JACOBS and CLARE S. JACOBS, citizens of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Engine-Casings, of which the following is a specification, reference being had therein to the accompanying drawings.

In the construction of internal combination engine cylinders and crank cases t has been the practice to use heavy, complicated castings.

It is the aim of our'invention to obviate the necessity of using castings by providing a fabricated structure consisting of formed wrought steel parts that can be easily assembled and welded to form a strong and durable structure that will serve the same purposes as those cast of a solid body of metal.

Our invention further resides in the novel of parts, being herewith described and then claimed. I

Reference will now be had to the drawings, wherein there is illustrated a preferred embodiment of the invention, but it is to be understood that the structural elements are susceptible to such changes, as in the size,

shape and manner of assemblages, as fall within the scope of the appended claims.

In the drawings, Figure 1, is a side elevation of the engine casing; Fig. 2, is a plan of the same; Fig. 3, is a longitudinal sectional view taken on the line IIIIII of Fig. 2, illustrating the valvularcompartments; Fig. 4, is a perspective view of parts of the engine casing assembled; Fig. 5, is a side elevation of valvular guides and valvular compartments adapted to form part of the engine casing; Fig. 6 is a longitudinal view of a portion of the engine casing, illustratin the manner of supporting cylinders; Fig. is a horizontal sectional viewof the engine casing; Fig. 8 is a cross sectional view of a portion of the same taken on the line VIII-VIII of Fig. 7; Fig. 9 is a similar.

view taken on the line IX- IX of Fig. 7; Fig. 10 is a similar view taken on the line XX of Fig. 7; Fig. 11 is a perspective view of a section of one of the exhaust valve guide members; and Fig. 12 is a perspective view of a section of one of the inlet valve guide members.

In describing our invention by aid of the drawings above referred to, we desire to point out that we intend said views as merely illustrative of an example whereby our invention may be applied in practice, and we do not limit our claims to the precise arrangement and construction of parts indicated. The followingdescription is therefore to be construed broadly as including substitute arrangements and constructions -which are the obvious equivalents of those herein shown. V

In the drawings there is illustrated an engine casing or body comprising end walls 1 and side walls 2 and 3. The walls 1,2 and 3 have the vertical edges thereof tapered and the upper end of said walls are bent to provide vertical portions 4, these portions forming the outer walls of a jacket 5. The walls 1, 2 and 3 are therefore disposed at an angle relatively to the vertical portions 4 and the said walls provide a compartment that decreases in area from the lower edges of the walls to the portions 4 of said walls.

The vertical ed es of the walls 1, 2 and 3 and the portions 4 thereof are adapted to be connected by welding, brazing or otherwise to provide substantially a one-piece or seamless casing.

Welded to the lower edges of the walls 1, 2 and 3 is a lateral flange, comprising sections 6, 7 and 8. The section 8 has curved ends adapted to be welded to the sections 7, and the section 6 is interposed between the sections 7, and secured thereto whereby said sections will form a rectangular frame that can be easily secured to the walls 1, 2 and 3 for supporting the engine casing upon a crank case (not shown) or other support. The sections 7 have semi-cylindrical bearing portions 9 and these portions engage rin recesses 10 provided therefor in the lower edges 1, said portions being welded to said end walls. The bearing ortions 9 are adapted to cooperate with similar portions in supporting the bushings of a crank shaft.

7 Arranged 1n the upper end of the casing are parallel horizontal head plates 11 and 12 that have their edges welded to the inner side of the vertical portion 4 of the casing walls. The head plates 11 and 12 form the top and bottom of the jacket 5,v and said heads, adjacent to the wall 2,.arefprov ded with vertically alining cylinder open ngs 13. Welded in the ends of these open ngs are tubular cylinder supports or bushings.

14 having the upper ends thereof provided with annular seats 15 for peripheral flanges 16, carried by the upper ends of cylinders 17 that are vertically disposed within the engine casing. The cylinders 17 .are of cast metal and are adapted to be machined to accommodate the pistons employed for 1mparting movement to a crank shaft revolubly supported at the lower end; of themgine casing, and are welded or pressed into the bushings 14. The top plate 11, ad acent to the wall 3 has a row of openings 13 that vertically aline with openings 19 in the plate 12. The openings 19 are of less diameter than the opening 13 and said openings receive the lower ends of valve rod guides 20 forming part of chambered members 21 and 22 that have the upper ends thereof welded. against the bottom side of the head plate 11, as shown in Fig. 3. The lower ends of the guides 20 are welded against the walls of the openings 19 and the members 21 and 22 provide vertical passages from the lower part of the engine casing to the upper part thereof. The members 21 are in the formof elbow connections and have the ends thereof welded against the inner side of the wall 3 of the engine casing to communicate with exhaust openings 23 provided therefor 1n the Vertical portion 4 of the wall3.

The members 22 are in the form of U connections. and. the rear or inner wall of said members have oblong inlet openings 24' that register with similar .openlngs 25, at the" ends of an oblong box or tube 26. The box or tube 26 'is arranged between the members 21 and 22 and the cylinder holders 14, said box or tube extending longitudinally of the water jacked-as best shownm Fig. 7 and having an inlet opening 27 mterniediate the ends thereof. Connecting the'inlet opening 27 and an opening 28 in the front wall 3 is an angularly disposed inlet flue 29 which has the ends thereof welded to the wall 3 and the wall of the box or tube 26.

A circulation of water or other cooling agent is maintained in the jacket 5 by providing the endplate 11 with openings 30 and 31, the ppenings 30 being located adjacent to the" walls 1 and 2 and the opening 31 approximately central of the head plate 11. The head plate 12 has a central opening 32 in communication with a curved conduit 33, which communicates with an opening 34 inthe wall 3 of the engine casing. The conduit 33 has parallel vertical walls forming the sides thereof and the ends of said conduit are welded to the head plate 12 and the wall 3. A water supply-pipe I can be connected to the wall 3 at the opening 34'to supply cold water to the jacket, the water passing out of pipes connected to the plate 11 at the openings 30 and 31,

thereby maintaining a circulation of water Q the members 21 and 22, the sections thereof represent longitudinal halves of said members and in consequence of the arrangement of the members between the head plates 11 and 12, the welded seams of the members 21 will be disposed at right angles to the welded seams of the members 22. This arrangement of thesections of the members 21 and 22 also adds rigidity to the upper part of the engine casing and distributes the welded edges of said members whereby stresses or strain upon the casing do not tend to fracture the connected sections of said members.

The plate 3 is provided. with ordinary 1 hand holes 35 and the head plate 11 can be easily ground to provide valve seats at the upper ends of the members 21 and 22. Vith these members of a greater diameter than the guides 20, compartments are formed for the inlet and exhaust of gases; it being understood that a cap or housing (not shown) is secured upon the top of the engine casing.

From the foregoing it will be observed that we have devised a novel fabricated structure having parts that can be easily.

and quickly assembled and in using the term welded or-brazed it is to be understood that any means or methods may be resorted to for making the assembled. parts integral whereby the completed structure has the appearance of having been made of a single piece or casting of-metal.

In some instances, particularly in connection with large engine casings,- it may be found feasible to use lap as well as butt joints, and by depressing portions of the walls 2 and 3 beads or fillets can be formed for stiii'ening certain parts of the casing.

An engine casing in vaccordance with our invention possesses the following advan tages;-First, making the parts thereof of separate pieces, it is possible before assembling the same, to determine if they are perfect and of proper form; second, the assembling of engine accessories or appurtenances is easily accomplished; third, with the easing made of light sheet metal the weight of an engine in its entirety is materially reduced thereby making the engine applicable to an air craft or vehicle requiring a maximum horse power with a minimum amount of engine weight; and fourth, a reduction in the cost of manufacture without sacrificing strength and material.

' said casing-and providing a water jacket,

cylinder holders supportedby said plates,

, members supported by said plates and providing valve rod guides and .an: inlet box arranged longitudinally of the water jacket of said casing and connected to some of said members and to a wall of said casing.

2. In an engine, valve rods, a casing comprising walls having the edges thereof connected together, top and bottom head plates arran ed at the upper ends of said walls and provi ing a water jacket, cylinders supported by said plates, members supported by said plates and providing guides for said valve rods, and inlet means in connection with some of said members.

3. An engine casing comprising walls having the edges thereof connected together, top and bottom head plates arranged between the upper ends of said walls and providing a water jacket, cylinders supported by said top and bottom head plates, inlet and exhaust members supported by said head plates and providing valve rod guides, the

exhaust members providing ports connecting the wall of said casing andthe top head plate, and the inlet members having inlet ports through said water jacket to the top head plate of said casing.

1 4. An engine casing comprising walls having the edges thereof connected together, top

and bottom head plates secured to the inner sides of said walls at the ends thereof andproviding a water jacket, cylinders supported by said head plates, sectional members supported by said plates and providing vertical valve rod guides and constituting inlet and exhaust ports for said engine casing.

5. An engine casing comprising plates having the edges thereof connected together, top and bottom head plates arranged between said walls at the upper ends thereof and providing a water jacket, cylinder holders having the ends thereof mounted in said plates and adapted to support cylinders, and members connecting said plates and providing inlet and exhaust ports for said engine casing.

6. An engine casing comprising walls having edges thereof connected together,-

head plates arranged between said walls at the upper ends thereof and providing a water jacket, cylinder holders having the ends thereof mounted in openings provided therefor in said plates and adapted'to support cylinders, members connecting said head plates and providing valverod guides, and an inlet box located in proximity to said members and establishing communication between some of said members and the wall of saidcasing.

thereof connected together;

7. In an engine casin walls havin edges thereof connected together, top and ottom head plates arrange in the u perrends of saidwalls providm a water acket, cylinersco'nnectinlfil said plates'and providing a exhaust and i t ports for the engine casmgm s 8. In. a fabricated engine casing, walls, horizontal head plates connecting said walls and, cooperating therewith in providing a water jacket, cylinders, means carried by i said plates for supportingsaid cylinders, exhaust members, connecting said plates with one of said walls, and inlet members connecting said plates.

9. An engine casing comprising walls, top and bottom plates arranged in parallelism and connected to said walls, plates cooperating with said walls in providing a water jacket, a conduit connecting one of said walls and one of said plates and cooperating with openings in the other of said plates to maintain a circulation in said water jacket, cylinders, means carried by said plates for supporting said cylinders, an inlet box located inthe water jacket of said casing and communicating with one of the walls thereof, and members supported by said plates and in communication with openings provided therefor in said plates, some of said members communicatingwith said inlet box and the other of said members with exhaust openings provided therefor in the walls of said casing.

10. An englne casing comprlsing walls adapted to have the edges thereof connected together, horizontal plates arranged between said walls and connected thereto and cooperating therewith in providing a water jacket, a conduit connecting one of said walls below said jacket and the bottom of said jacket and cooperatingwith openings I in said plates to maintain a circulation in said water jacket, and chambered members connecting said plates and providing valve rod guides.

11. An engine casing comprising walls, plates arranged between said walls and providing a water jacket, cylinders, means connecting said plates for supporting said cylinders, an inlet box arranged in proximity to said cylinders, and communicating with one of the walls of said casing, chambered members establishing communication be tween one of said plates and said inlet box, chambered members establishing communication between the same plates and one of the walls of said casing, all of said members having valve rod guides.

' 12. An engine casing comprising walls, top and bottom head plates connecting said walls and providingawater jacket, an inlet box arranged in the water jacket of said cas- ILZU ing and in communication with one of the walls thereof, U shaped exhaust members supported by said plates and establishing.

communication bet-ween said inlet box and said top plate, and elbow members sup ported by said plates and establishing communication between said top plate and the wall of the casing.

13. An engine casing comprising walls, top and bottom plates connecting said walls and providing a water jacket, an inlet box arranged in the water jacket of said casing and in communication with one of the walls thereof, U shaped exhaust members supported by said plates and establishing communication between said inlet box and said top plate, elbow members supported by said plates and establishing communication between said top plate and the yvall of said casing, and valve rod guides carried by all of said members. I

14... An engine casing comprising walls, top and bottom head plates connected to said walls and providing a Water jacket, cylinders means carried by said top and bottom plates for supporting said cylmders, an inlet box arranged in the water jacket of said casing and in communication with one of the walls thereof, U shaped members suported by said top and bottom plates estabishing communication between said top plate and said inlet box and elbow mem bers connecting said plates and establish ing communication between said top plate and the wall of said casing.

15. An engine casing comprising walls, top and bottom head plates connected to said walls and providing a water jacket, cylinders, means carried by said top and bottom plates for supporting said cylinders, an inlet box arranged in the water jacket of said casing and in communication with one of the Walls thereof, U-shaped members supported by said top and bottom plates establishing communication between said top plate and said inlet box, elbow members connecting said plates and establishing comlmunication between said top plate and the wall of said casing, and valve rod guides carried by all of said members and extending into said, bottom plate.

In testimony whereof we afix our signatures in presence oftwo witnesses.

FREDRIOK L. JACOBS. CLARE S. JACOBS. Witnessesz.

LEWIS E. FLANDERS,. ANNA. M. Donn. 

